A fan mounting structure

Abstract

The utility model relates to a direct current power supply technical field especially a fan mounting structure, including support, the support intercommunication both sides form several ventilation holes, the support is located in the same side respectively fixed connection has the wiring PCB board and with the fan corresponding to the ventilation hole, wherein, still through the elastic structure detachable connection has several wire binding buckle at the side of support, still be equipped with the winding structure between wire binding buckle and the support, the power cord of fan is through the winding structure and is fixed in wire binding buckle inside, and the power cord of fan can be through the winding mode and is rolled up in the periphery of wire binding buckle before connecting with the wiring PCB board, and the power cord can be fixed in wire binding buckle through the clamping mode after winding, wire binding buckle can drive the free end of rod -shaped department to shrink through the mode of extruding both sides protruding part, when rod -shaped department is separated from the pressure spring and the support, can carry out the dismounting to wire binding buckle.

Description

Technical Field

[0001] This utility model relates to the field of DC power supply technology, and in particular to a fan mounting structure. Background Technology

[0002] A DC power supply is a device that converts raw electrical energy, such as alternating current (AC) or batteries, into a stable direct current (DC) output. It is widely used in industries, communications, laboratories, consumer electronics, and other fields. Its main principle is to use internal transformers and rectifier bridges to step down, rectify, filter, and linearly regulate the voltage.

[0003] The internal components of a DC power supply generate heat during operation, necessitating a heat dissipation device to cool the internal components. For example, Chinese Patent Publication No. CN212970600U discloses a modular DC power supply heat dissipation device, comprising a housing and a multi-layer heat dissipation module housed within the housing. The housing is a cuboid structure with six end faces, two opposite end faces forming a front panel with several first heat dissipation holes and a rear panel with several second heat dissipation holes. The multi-layer heat dissipation module includes a bottom layer, a middle layer, and a top layer, stacked sequentially from bottom to top inside the housing and positioned between the front and rear panels. The various components of the DC power supply are respectively arranged on the bottom, middle, and top layers of the heat dissipation module. The advantage of this invention is that it designs a heat dissipation device specifically for the full-bridge converter topology of the DC power supply, achieving the required heat dissipation and providing uniform heat dissipation.

[0004] In practice, the fan and the radiator are connected by a power cord. There is no structure inside the chassis to reel in or fix the power cord. This affects the utilization of space inside the chassis. In addition, the lack of a fixed power cord means that the shaking and pulling force of the chassis may directly affect the terminal blocks, resulting in poor contact or terminal detachment. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the prior art, which is that the power cord cannot be wound or fixed, and to propose a fan mounting structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a fan mounting structure, including a bracket, the bracket connecting two sides to form a plurality of ventilation holes, a wiring PCB board and a fan corresponding to the ventilation holes are fixedly connected to the bracket on the same side; Among them, several wire ties are detachably connected to the side of the bracket via an elastic structure, and a wire winding structure is provided between the wire ties and the bracket. The power cord of the fan is wound up by the winding structure and fixed in the cable tie, and the power cord of the fan is connected to the wiring PCB board.

[0007] Furthermore, the wire tie consists of a rod-shaped part and a clamping part, the rod-shaped part and the clamping part are integrally formed, the free end of the rod-shaped part is slidably connected to the bracket, and the clamping part has a U-shaped structure with its two arms extending inward and abutting against each other.

[0008] Furthermore, the elastic structure includes an elastic portion, and the free end of the rod-shaped portion forms two elastic portions through a deformation groove. The outer walls of the two elastic portions have protrusions that are disposed opposite to each other.

[0009] Furthermore, a compression spring is sleeved around the free end of the rod-shaped portion, and the two ends of the compression spring abut against the protrusion and the side wall of the bracket, respectively.

[0010] Furthermore, the winding structure includes a stop portion, which has an arc-shaped structure and its middle part is fixedly connected to the fixed end of the rod-shaped portion, and the stop portion abuts against the bracket; The bracket also has limiting protrusions on both sides of the stop portion.

[0011] Furthermore, the power cord of the fan is wound around the periphery of the rod-shaped portion and stopped inside the stop portion, and the power cord of the fan is also fixed inside the clamping portion.

[0012] The fan mounting structure proposed in this utility model has the following advantages: Before the fan power cord is connected to the wiring PCB board, it can be wound around the outside of the cable tie by winding. In this way, the length of the power cord can be adjusted within a certain range according to the actual length of the power cord of different fan models and the number of cable ties, so as to prevent the connection and fixation of the power cord from being too long or too short. After the power cord is wound up, it can be fixed in the cable tie by clamping. The wire tie can be driven to retract the free end of the rod by squeezing the protrusions on both sides. Once the rod is disengaged from the compression spring and the bracket, the wire tie can be disassembled, preventing waste caused by replacing the entire wire tie or bracket if it is damaged. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A magnified structural diagram of area A; Figure 3 This is an exploded view of the present invention; Figure 4 This is a schematic diagram of the elastic structure of this utility model; Figure 5 for Figure 4 A magnified structural diagram of region B.

[0014] In the diagram: 1. Bracket; 2. Ventilation hole; 3. Wiring PCB board; 4. Fan; 5. Elastic structure; 51. Elastic part; 52. Deformation groove; 53. Protrusion; 54. Compression spring; 6. Cable tie; 61. Rod-shaped part; 62. Clamping part; 7. Wire winding structure; 71. Stop part; 72. Limiting protrusion. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-5 A fan mounting structure includes a bracket 1, which connects two sides to form a plurality of ventilation holes 2. A wiring PCB board 3 and a fan 4 corresponding to the ventilation holes 2 are fixedly connected to the bracket 1 on the same side. Among them, a number of wire ties 6 are detachably connected to the side of the bracket 1 by an elastic structure 5, and a wire winding structure 7 is provided between the wire ties 6 and the bracket 1. The power cord of the fan 4 is wound up by the winding structure 7 and fixed in the cable tie 6, and the power cord of the fan 4 is connected to the wiring PCB board 3.

[0017] In some embodiments, the DC power supply device includes a housing, inside which components such as a transformer and a rectifier bridge are installed. The specific structure is existing technology and will not be described in detail. The fan 4 and the bracket 1 are installed inside the housing in a fixed manner to dissipate heat from the power supply components. Of course, the housing needs to have an air inlet and an air outlet. The fan 4 is fixed to the bracket 1 with screws.

[0018] Furthermore, the wire tie 6 is composed of a rod-shaped part 61 and a clamping part 62. The rod-shaped part 61 and the clamping part 62 are integrally formed. The free end of the rod-shaped part 61 is slidably connected to the bracket 1. The clamping part 62 has a U-shaped structure, with its two arms extending inward and abutting against each other.

[0019] Furthermore, the elastic structure 5 includes an elastic part 51. The free end of the rod-shaped part 61 forms two elastic parts 51 through a deformation groove 52. The outer walls of the two elastic parts 51 have protrusions 53 arranged opposite to each other.

[0020] More specifically, a compression spring 54 is sleeved around the free end of the rod-shaped part 61, and the two ends of the compression spring 54 abut against the protrusion 53 and the side wall of the bracket 1, respectively.

[0021] In this embodiment, the cable tie 6 is preferably made of a material with elasticity, such as rubber or plastic. Figure 2 As shown, the two arms of the clamping part 62 extend inward and abut against each other, and the power cord of the fan 4 can be fixed in the clamping part 62 by sliding against each other to prevent the power cord from becoming loose after being wound up. It is worth mentioning that the fan 4 in the prior art is a three-pin fan or a four-pin fan. The three-pin and four-pin correspond to three or four types of connecting wires, mainly including power wire, ground wire and speed signal wire. Multiple connecting wires are intertwined with each other and have a certain diameter, so they can be stably clamped and fixed in the clamping part 62. Under normal circumstances, when unlocking the wire tie 6, the two protrusions 53 are pinched inward to drive the two elastic parts 51 to deform slightly inward under the action of the deformation groove 52. On the one hand, the two protrusions 53 disengage from the compression spring 54, and on the other hand, the two protrusions 53 disengage from the connection hole of the bracket 1 by avoiding it, so that the wire tie 6 can be disassembled.

[0022] It is worth mentioning that the connection method between the cable tie 6 and the bracket 1 can be referred to the circular buckle connection structure in the prior art. In addition, the cable tie 6 is preferably set to correspond to the number of fans 4.

[0023] In general, the winding structure 7 includes a stop portion 71, which has an arc-shaped structure and its middle part is fixedly connected to the fixed end of the rod-shaped portion 61. The stop portion 71 abuts against the bracket 1. The bracket 1 is provided with limiting protrusions 72 on both sides of the stop part 71.

[0024] Finally, the power cord of the fan 4 is wound around the periphery of the rod-shaped part 61 and stopped inside the stop part 71, and the power cord of the fan 4 is also fixed inside the clamping part 52.

[0025] In this embodiment, as Figure 2 As shown, the stop part 71 has an arc-shaped structure. Under the support force of the compression spring 54, the wire tie 6 moves to the side of the stop part 71 that is connected to the compression spring 54, thereby driving the stop part 71 to contact the side of the bracket 1. Preferably, the stop part 71, together with the clamping part 62, can prevent the power cord of the fan 4 from coming off the rod-shaped part 61 or from becoming loose; Specifically, two limit protrusions 72 are set to circumferentially lock the stop part 71 to prevent the power cord from twisting. It is worth mentioning that in the existing technology, the power cord of the fan 4 is connected to the wiring PCB board 3 through a plug-in terminal rather than being fixed with solder, so as to avoid affecting the power cord connection.

[0026] In specific operation, pull the cable tie 6 outward. At this time, the stop part 71 separates from the bracket 1, and the power cord can be wound and rolled up. After the winding is completed, the power cord is clamped in the clamping part 62. If the length is appropriate, the power cord can be connected to the wiring PCB board 3. Furthermore, the stability of the power cord is further improved due to the clamping force.

[0027] Working method: The bracket 1 and the fan 4 are fixed with screws. After the fan 4 is fixed, the cable tie 6 is pulled to drive the stop part 71 to separate from the side wall of the bracket 1. Then the power of the fan 4 is wound layer by layer on the rod-shaped part 61. After the winding is completed, the cable tie 6 is reset under the action of the compression spring 54. The stop part 71 and the clamping part 62 can prevent the power cord of the fan 4 from coming off the rod-shaped part 61 or from becoming loose. Then the power cord can be connected. When the wire tie 6 needs to be disassembled, the two protrusions 53 are pinched inward to drive the two elastic parts 51 to deform slightly inward under the action of the deformation groove 52. On the one hand, the two protrusions 53 are disengaged from the compression spring 54, and on the other hand, the two protrusions 53 are disengaged from the connection hole of the bracket 1 by avoiding it, so that the wire tie 6 can be disassembled.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fan mounting structure, comprising a bracket (1), characterized in that: The bracket (1) connects the two sides to form a number of ventilation holes (2). The bracket (1) is fixedly connected to a wiring PCB board (3) and a fan (4) corresponding to the ventilation holes (2) on the same side. Among them, a number of wire ties (6) are detachably connected to the side of the bracket (1) by an elastic structure (5), and a wire winding structure (7) is provided between the wire ties (6) and the bracket (1). The power cord of the fan (4) is wound up by the winding structure (7) and fixed in the wire tie (6), and the power cord of the fan (4) is connected to the wiring PCB board (3).

2. The fan mounting structure according to claim 1, characterized in that: The wire tie (6) is composed of a rod-shaped part (61) and a clamping part (62). The rod-shaped part (61) and the clamping part (62) are integrally formed. The free end of the rod-shaped part (61) is slidably connected to the bracket (1). The clamping part (62) has a U-shaped structure, with its two arms extending inward and touching each other.

3. The fan mounting structure according to claim 2, characterized in that: The elastic structure (5) includes an elastic part (51), and the free end of the rod-shaped part (61) forms two elastic parts (51) through a deformation groove (52). The outer walls of the two elastic parts (51) have protrusions (53) arranged opposite to each other.

4. A fan mounting structure according to claim 3, characterized in that: A compression spring (54) is sleeved around the free end of the rod-shaped part (61), and the two ends of the compression spring (54) abut against the protrusion (53) and the side wall of the bracket (1), respectively.

5. A fan mounting structure according to claim 2, characterized in that: The winding structure (7) includes a stop (71), which has an arc-shaped structure and is fixedly connected to the fixed end of the rod-shaped part (61). The stop (71) abuts against the bracket (1). The bracket (1) is provided with limiting protrusions (72) on both sides of the stop (71).

6. A fan mounting structure according to claim 5, characterized in that: The power cord of the fan (4) is wound around the periphery of the rod-shaped part (61) and stopped in the stop part (71), and the power cord of the fan (4) is also fixed in the clamping part (62).

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